linux-kernel - Re: [PATCH v6 3/3] arm64: dts: qcom: Add base HAMOA-IOT-EVK board

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Message-ID: <33ac5fef-f855-46f3-acd3-daa8fc34d918@oss.qualcomm.com>
Date: Mon, 25 Aug 2025 10:47:22 +0800
From: Yijie Yang <yijie.yang@....qualcomm.com>
To: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Cc: Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
 <conor+dt@...nel.org>, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Quill Qi <le.qi@....qualcomm.com>, Jie Zhang <quic_jiezh@...cinc.com>,
        Shuai Zhang <quic_shuaz@...cinc.com>,
        Yongxing Mou <quic_yongmou@...cinc.com>
Subject: Re: [PATCH v6 3/3] arm64: dts: qcom: Add base HAMOA-IOT-EVK board



On 2025-08-22 19:56, Dmitry Baryshkov wrote:
> On Thu, Aug 21, 2025 at 04:20:24PM +0800, Yijie Yang wrote:
>> The HAMOA-IOT-EVK is an evaluation platform for IoT products, composed of
>> the Hamoa IoT SoM and a carrier board. Together, they form a complete
>> embedded system capable of booting to UART.
>>
>> This change enables the following peripherals on the carrier board:
>> - UART
>> - On-board regulators
>> - USB Type-C mux
>> - Pinctrl
>> - Embedded USB (EUSB) repeaters
>> - NVMe
>> - pmic-glink
>> - USB DisplayPorts
>> - Bluetooth
>> - Graphic
>> - Audio
> 
> No WiFi?
It's in patch 2/3.>
>>
>> Co-developed-by: Quill Qi <le.qi@....qualcomm.com> # Audio
>> Signed-off-by: Quill Qi <le.qi@....qualcomm.com>
>> Co-developed-by: Jie Zhang <quic_jiezh@...cinc.com> # Graphic
>> Signed-off-by: Jie Zhang <quic_jiezh@...cinc.com>
>> Co-developed-by: Shuai Zhang <quic_shuaz@...cinc.com> # Bluetooth
>> Signed-off-by: Shuai Zhang <quic_shuaz@...cinc.com>
>> Co-developed-by: Yongxing Mou <quic_yongmou@...cinc.com> # USB DisplayPorts
>> Signed-off-by: Yongxing Mou <quic_yongmou@...cinc.com>
>> Signed-off-by: Yijie Yang <yijie.yang@....qualcomm.com>
>> ---
>>   arch/arm64/boot/dts/qcom/Makefile          |    1 +
>>   arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts | 1247 ++++++++++++++++++++++++++++
>>   2 files changed, 1248 insertions(+)
>>
> 
>> +
>> +	vreg_edp_3p3: regulator-edp-3p3 {
>> +		compatible = "regulator-fixed";
>> +
>> +		regulator-name = "VREG_EDP_3P3";
>> +		regulator-min-microvolt = <3300000>;
>> +		regulator-max-microvolt = <3300000>;
>> +
>> +		gpio = <&tlmm 70 GPIO_ACTIVE_HIGH>;
>> +		enable-active-high;
>> +
>> +		pinctrl-0 = <&edp_reg_en>;
>> +		pinctrl-names = "default";
>> +
>> +		regulator-always-on;
> 
> Why? If it supplies the panel, then the panel should be able to control
> its power supplies.

You're right, I will fix.

> 
>> +		regulator-boot-on;
>> +	};
>> +
>> +		wcd-playback-dai-link {
>> +			link-name = "WCD Playback";
>> +
>> +			codec {
>> +				sound-dai = <&wcd938x 0>, <&swr1 0>, <&lpass_rxmacro 0>;
>> +			};
>> +			cpu {
> 
> MIssing empty line between nodes.

I'll update.

> 
>> +				sound-dai = <&q6apmbedai RX_CODEC_DMA_RX_0>;
>> +			};
>> +
>> +			platform {
>> +				sound-dai = <&q6apm>;
>> +			};
>> +		};
>> +
> 

-- 
Best Regards,
Yijie